Question

I am trying to run this code, but a is always null. I made sure that there’s a Name, why does it always return null?

   public  Animal FindAnimal(string Name)
    {
        Animal a = Animals.Find(

            delegate(Animal bk)
            {
                return bk.AnimalName.ToLower() == Name.ToLower();
            }


            );
        return a;

    }

Answer 1

Your code looks fine to me. Here are some small optimizations though:

public Animal FindAnimal(string name)
{
    return Animals.Find((a) => String.Equals(a.AnimalName, name, StringComparison.CurrentCultureIgnoreCase));
}

EDIT
Test of code:

void Main()
{
     var foundAnimal = FindAnimal("Monkey"); //Not null
}

List<Animal> Animals = new List<Animal>(){ new Animal() { AnimalName = "Monkey" }};

public Animal FindAnimal(string name)
{
    return Animals.Find((a) => String.Equals(a.AnimalName, name, StringComparison.CurrentCultureIgnoreCase));
}   
public class Animal
{
    public string AnimalName { get; set; }
}